SHOTS FIRED AT JOHNSON SPACE CENTER: Reports seem pretty confused at the moment — I’m watching CNN. Wolf Blitzer says weapons aren’t allowed on the property, but it sounds like that didn’t work. . . .

But early reports are usually unreliable, so stay tuned.

UPDATE: A report that it’s a contract employee, plus much more, here. More reports, and live video streaming, at KHOU TV.

MORE: Gunman and one hostage dead; another hostage freed. Reports that gunman was shouting “Put me on TV, NBC!” are likely not true . . . .